If you're new to the topic, we have a great regular expression tutorial. Here are four regular expressions (often called regexes) that all validate the format of an email address.

For simpler and more efficient coding, Java offers the Regex API. This two-part tutorial helps you get started with regular expressions and the Regex API.

A quick run down on how you can use regular expressions in your own programs to give you more power over searching and substituting text.

A long time ago, I wrote a utility for an employer that allowed testers to perform verification on data coming out of a hardware box using a regular expression language. It allowed users to ...

What is Regex? Regex is a pattern-matching language; it's a way to expressively describe patterns that match strings (e.g., words or sentences).